[chronojump] When executing a test, timer on screen is sync ok now

[Xavier de Blas <xaviblas src gnome org>]

commit 0b92aec320fdbcd9387d6e41339d1be5e4585b58
Author: Xavier de Blas <xaviblas gmail com>
Date:   Tue Jul 15 17:37:11 2014 +0200

    When executing a test, timer on screen is sync ok now

 src/execute/event.cs |   11 ++++++++++-
 1 files changed, 10 insertions(+), 1 deletions(-)
---
diff --git a/src/execute/event.cs b/src/execute/event.cs
index e96855c..cb555fd 100644
--- a/src/execute/event.cs
+++ b/src/execute/event.cs
@@ -92,6 +92,7 @@ public class EventExecute
        //It starts when the first event is detected
        //protected System.Timers.Timer timerClock = new System.Timers.Timer();    
        protected double timerCount; // every 50 milliseconds: 
+       protected DateTime timerStart; // used as timestamp to count better 
 
        protected Random rand;
        protected bool simulated;
@@ -257,6 +258,7 @@ public class EventExecute
                //put onTimer count to 0 for moving the time progressBar (activiy mode) 
                //also in simulated, allows to change platform state
                timerCount = 0;
+               timerStart = DateTime.UtcNow;
        }
                
        //onTimer allow to update progressbar_time every 50 milliseconds
@@ -264,7 +266,14 @@ public class EventExecute
        //protected void onTimer( Object source, ElapsedEventArgs e )
        protected virtual void onTimer( )
        {
-               timerCount = timerCount + .05; //0,05 segons == 50 milliseconds, time between each call of 
onTimer
+               //this is not ok because not always is called every 50 milliseconds and then timer gets 
outdated
+               //timerCount = timerCount + .05; //0,05 segons == 50 milliseconds, time between each call of 
onTimer
+       
+               //used Utc.Now because is lot faster:
+               
//http://stackoverflow.com/questions/28637/is-datetime-now-the-best-way-to-measure-a-functions-performance    
  
+               DateTime timerNow = DateTime.UtcNow;
+               TimeSpan ts = timerNow.Subtract(timerStart);
+               timerCount = ts.TotalSeconds; 
                
                /* this will be good for not continue counting the time on eventWindow when event has finished
                 * this will help to sync chronopic data with the timerCount data